512361242163181 has 2 divisors, whose sum is σ = 512361242163182. Its totient is φ = 512361242163180.

The previous prime is 512361242163179. The next prime is 512361242163217. The reversal of 512361242163181 is 181361242163215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 494926784302500 + 17434457860681 = 22246950^2 + 4175459^2 .

It is a cyclic number.

It is not a de Polignac number, because 512361242163181 - 2¹ = 512361242163179 is a prime.

It is a super-2 number, since 2×512361242163181² (a number of 30 digits) contains 22 as substring.

Together with 512361242163179, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (512361242163131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256180621081590 + 256180621081591.

It is an arithmetic number, because the mean of its divisors is an integer number (256180621081591).

Almost surely, 2^{512361242163181} is an apocalyptic number.

It is an amenable number.

512361242163181 is a deficient number, since it is larger than the sum of its proper divisors (1).

512361242163181 is an equidigital number, since it uses as much as digits as its factorization.

512361242163181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 46.

The spelling of 512361242163181 in words is "five hundred twelve trillion, three hundred sixty-one billion, two hundred forty-two million, one hundred sixty-three thousand, one hundred eighty-one".